mirror of https://github.com/odrling/Aegisub
392 lines
11 KiB
C
392 lines
11 KiB
C
/*
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** $Id: lua.h,v 1.175c 2003/03/18 12:31:39 roberto Exp $
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** Lua - An Extensible Extension Language
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** Tecgraf: Computer Graphics Technology Group, PUC-Rio, Brazil
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** http://www.lua.org mailto:info@lua.org
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** See Copyright Notice at the end of this file
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*/
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#ifndef lua_h
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#define lua_h
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#include <stdarg.h>
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#include <stddef.h>
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#define LUA_VERSION "Lua 5.0.3"
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#define LUA_COPYRIGHT "Copyright (C) 1994-2006 Tecgraf, PUC-Rio"
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#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo & W. Celes"
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/* option for multiple returns in `lua_pcall' and `lua_call' */
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#define LUA_MULTRET (-1)
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/*
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** pseudo-indices
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*/
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#define LUA_REGISTRYINDEX (-10000)
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#define LUA_GLOBALSINDEX (-10001)
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#define lua_upvalueindex(i) (LUA_GLOBALSINDEX-(i))
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/* error codes for `lua_load' and `lua_pcall' */
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#define LUA_ERRRUN 1
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#define LUA_ERRFILE 2
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#define LUA_ERRSYNTAX 3
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#define LUA_ERRMEM 4
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#define LUA_ERRERR 5
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typedef struct lua_State lua_State;
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typedef int (*lua_CFunction) (lua_State *L);
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/*
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** functions that read/write blocks when loading/dumping Lua chunks
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*/
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typedef const char * (*lua_Chunkreader) (lua_State *L, void *ud, size_t *sz);
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typedef int (*lua_Chunkwriter) (lua_State *L, const void* p,
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size_t sz, void* ud);
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/*
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** basic types
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*/
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#define LUA_TNONE (-1)
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#define LUA_TNIL 0
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#define LUA_TBOOLEAN 1
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#define LUA_TLIGHTUSERDATA 2
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#define LUA_TNUMBER 3
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#define LUA_TSTRING 4
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#define LUA_TTABLE 5
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#define LUA_TFUNCTION 6
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#define LUA_TUSERDATA 7
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#define LUA_TTHREAD 8
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/* minimum Lua stack available to a C function */
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#define LUA_MINSTACK 20
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/*
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** generic extra include file
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*/
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#ifdef LUA_USER_H
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#include LUA_USER_H
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#endif
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/* type of numbers in Lua */
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#ifndef LUA_NUMBER
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typedef double lua_Number;
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#else
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typedef LUA_NUMBER lua_Number;
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#endif
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/* mark for all API functions */
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#ifndef LUA_API
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#define LUA_API extern
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#endif
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/*
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** state manipulation
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*/
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LUA_API lua_State *lua_open (void);
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LUA_API void lua_close (lua_State *L);
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LUA_API lua_State *lua_newthread (lua_State *L);
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LUA_API lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf);
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/*
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** basic stack manipulation
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*/
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LUA_API int lua_gettop (lua_State *L);
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LUA_API void lua_settop (lua_State *L, int idx);
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LUA_API void lua_pushvalue (lua_State *L, int idx);
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LUA_API void lua_remove (lua_State *L, int idx);
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LUA_API void lua_insert (lua_State *L, int idx);
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LUA_API void lua_replace (lua_State *L, int idx);
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LUA_API int lua_checkstack (lua_State *L, int sz);
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LUA_API void lua_xmove (lua_State *from, lua_State *to, int n);
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/*
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** access functions (stack -> C)
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*/
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LUA_API int lua_isnumber (lua_State *L, int idx);
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LUA_API int lua_isstring (lua_State *L, int idx);
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LUA_API int lua_iscfunction (lua_State *L, int idx);
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LUA_API int lua_isuserdata (lua_State *L, int idx);
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LUA_API int lua_type (lua_State *L, int idx);
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LUA_API const char *lua_typename (lua_State *L, int tp);
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LUA_API int lua_equal (lua_State *L, int idx1, int idx2);
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LUA_API int lua_rawequal (lua_State *L, int idx1, int idx2);
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LUA_API int lua_lessthan (lua_State *L, int idx1, int idx2);
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LUA_API lua_Number lua_tonumber (lua_State *L, int idx);
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LUA_API int lua_toboolean (lua_State *L, int idx);
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LUA_API const char *lua_tostring (lua_State *L, int idx);
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LUA_API size_t lua_strlen (lua_State *L, int idx);
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LUA_API lua_CFunction lua_tocfunction (lua_State *L, int idx);
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LUA_API void *lua_touserdata (lua_State *L, int idx);
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LUA_API lua_State *lua_tothread (lua_State *L, int idx);
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LUA_API const void *lua_topointer (lua_State *L, int idx);
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/*
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** push functions (C -> stack)
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*/
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LUA_API void lua_pushnil (lua_State *L);
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LUA_API void lua_pushnumber (lua_State *L, lua_Number n);
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LUA_API void lua_pushlstring (lua_State *L, const char *s, size_t l);
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LUA_API void lua_pushstring (lua_State *L, const char *s);
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LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt,
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va_list argp);
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LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...);
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LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n);
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LUA_API void lua_pushboolean (lua_State *L, int b);
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LUA_API void lua_pushlightuserdata (lua_State *L, void *p);
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/*
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** get functions (Lua -> stack)
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*/
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LUA_API void lua_gettable (lua_State *L, int idx);
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LUA_API void lua_rawget (lua_State *L, int idx);
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LUA_API void lua_rawgeti (lua_State *L, int idx, int n);
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LUA_API void lua_newtable (lua_State *L);
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LUA_API void *lua_newuserdata (lua_State *L, size_t sz);
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LUA_API int lua_getmetatable (lua_State *L, int objindex);
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LUA_API void lua_getfenv (lua_State *L, int idx);
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/*
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** set functions (stack -> Lua)
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*/
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LUA_API void lua_settable (lua_State *L, int idx);
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LUA_API void lua_rawset (lua_State *L, int idx);
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LUA_API void lua_rawseti (lua_State *L, int idx, int n);
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LUA_API int lua_setmetatable (lua_State *L, int objindex);
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LUA_API int lua_setfenv (lua_State *L, int idx);
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/*
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** `load' and `call' functions (load and run Lua code)
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*/
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LUA_API void lua_call (lua_State *L, int nargs, int nresults);
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LUA_API int lua_pcall (lua_State *L, int nargs, int nresults, int errfunc);
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LUA_API int lua_cpcall (lua_State *L, lua_CFunction func, void *ud);
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LUA_API int lua_load (lua_State *L, lua_Chunkreader reader, void *dt,
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const char *chunkname);
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LUA_API int lua_dump (lua_State *L, lua_Chunkwriter writer, void *data);
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/*
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** coroutine functions
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*/
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LUA_API int lua_yield (lua_State *L, int nresults);
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LUA_API int lua_resume (lua_State *L, int narg);
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/*
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** garbage-collection functions
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*/
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LUA_API int lua_getgcthreshold (lua_State *L);
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LUA_API int lua_getgccount (lua_State *L);
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LUA_API void lua_setgcthreshold (lua_State *L, int newthreshold);
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/*
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** miscellaneous functions
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*/
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LUA_API const char *lua_version (void);
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LUA_API int lua_error (lua_State *L);
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LUA_API int lua_next (lua_State *L, int idx);
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LUA_API void lua_concat (lua_State *L, int n);
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/*
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** ===============================================================
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** some useful macros
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** ===============================================================
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*/
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#define lua_boxpointer(L,u) \
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(*(void **)(lua_newuserdata(L, sizeof(void *))) = (u))
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#define lua_unboxpointer(L,i) (*(void **)(lua_touserdata(L, i)))
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#define lua_pop(L,n) lua_settop(L, -(n)-1)
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#define lua_register(L,n,f) \
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(lua_pushstring(L, n), \
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lua_pushcfunction(L, f), \
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lua_settable(L, LUA_GLOBALSINDEX))
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#define lua_pushcfunction(L,f) lua_pushcclosure(L, f, 0)
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#define lua_isfunction(L,n) (lua_type(L,n) == LUA_TFUNCTION)
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#define lua_istable(L,n) (lua_type(L,n) == LUA_TTABLE)
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#define lua_islightuserdata(L,n) (lua_type(L,n) == LUA_TLIGHTUSERDATA)
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#define lua_isnil(L,n) (lua_type(L,n) == LUA_TNIL)
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#define lua_isboolean(L,n) (lua_type(L,n) == LUA_TBOOLEAN)
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#define lua_isnone(L,n) (lua_type(L,n) == LUA_TNONE)
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#define lua_isnoneornil(L, n) (lua_type(L,n) <= 0)
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#define lua_pushliteral(L, s) \
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lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
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/*
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** compatibility macros and functions
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*/
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LUA_API int lua_pushupvalues (lua_State *L);
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#define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX)
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#define lua_setglobal(L,s) \
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(lua_pushstring(L, s), lua_insert(L, -2), lua_settable(L, LUA_GLOBALSINDEX))
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#define lua_getglobal(L,s) \
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(lua_pushstring(L, s), lua_gettable(L, LUA_GLOBALSINDEX))
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/* compatibility with ref system */
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/* pre-defined references */
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#define LUA_NOREF (-2)
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#define LUA_REFNIL (-1)
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#define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) : \
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(lua_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
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#define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))
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#define lua_getref(L,ref) lua_rawgeti(L, LUA_REGISTRYINDEX, ref)
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/*
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** {======================================================================
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** useful definitions for Lua kernel and libraries
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** =======================================================================
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*/
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/* formats for Lua numbers */
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#ifndef LUA_NUMBER_SCAN
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#define LUA_NUMBER_SCAN "%lf"
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#endif
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#ifndef LUA_NUMBER_FMT
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#define LUA_NUMBER_FMT "%.14g"
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#endif
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/* }====================================================================== */
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/*
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** {======================================================================
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** Debug API
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** =======================================================================
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*/
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/*
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** Event codes
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*/
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#define LUA_HOOKCALL 0
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#define LUA_HOOKRET 1
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#define LUA_HOOKLINE 2
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#define LUA_HOOKCOUNT 3
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#define LUA_HOOKTAILRET 4
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/*
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** Event masks
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*/
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#define LUA_MASKCALL (1 << LUA_HOOKCALL)
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#define LUA_MASKRET (1 << LUA_HOOKRET)
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#define LUA_MASKLINE (1 << LUA_HOOKLINE)
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#define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT)
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typedef struct lua_Debug lua_Debug; /* activation record */
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typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);
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LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar);
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LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar);
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LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n);
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LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n);
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LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n);
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LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n);
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LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count);
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LUA_API lua_Hook lua_gethook (lua_State *L);
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LUA_API int lua_gethookmask (lua_State *L);
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LUA_API int lua_gethookcount (lua_State *L);
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#define LUA_IDSIZE 60
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struct lua_Debug {
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int event;
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const char *name; /* (n) */
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const char *namewhat; /* (n) `global', `local', `field', `method' */
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const char *what; /* (S) `Lua', `C', `main', `tail' */
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const char *source; /* (S) */
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int currentline; /* (l) */
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int nups; /* (u) number of upvalues */
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int linedefined; /* (S) */
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char short_src[LUA_IDSIZE]; /* (S) */
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/* private part */
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int i_ci; /* active function */
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};
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/* }====================================================================== */
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/******************************************************************************
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* Copyright (C) 1994-2006 Tecgraf, PUC-Rio. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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******************************************************************************/
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#endif
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